4-109771075-G-A

Variant names:

• chr4-109771075-G-A
• rs12512308
• NM_000204.5:c.58-4251C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000204.5(CFI):​c.58-4251C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.241 in 151,878 control chromosomes in the GnomAD database, including 5,035 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.24 (5035 hom., cov: 30)
• Consequence: CFI NM_000204.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.358
• Publications: 2 publications found

Genes affected

CFI (HGNC:5394): (complement factor I) This gene encodes a serine proteinase that is essential for regulating the complement cascade. The encoded preproprotein is cleaved to produce both heavy and light chains, which are linked by disulfide bonds to form a heterodimeric glycoprotein. This heterodimer can cleave and inactivate the complement components C4b and C3b, and it prevents the assembly of the C3 and C5 convertase enzymes. Defects in this gene cause complement factor I deficiency, an autosomal recessive disease associated with a susceptibility to pyogenic infections. Mutations in this gene have been associated with a predisposition to atypical hemolytic uremic syndrome, a disease characterized by acute renal failure, microangiopathic hemolytic anemia and thrombocytopenia. Primary glomerulonephritis with immune deposits and age-related macular degeneration are other conditions associated with mutations of this gene. [provided by RefSeq, Dec 2015]

CFI Gene-Disease associations (from GenCC):

• atypical hemolytic-uremic syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• atypical hemolytic-uremic syndrome with I factor anomaly

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• complement factor I deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• Doyne honeycomb retinal dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• age related macular degeneration 13

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ENSG00000285330 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.74).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.347 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000204.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CFI	NM_000204.5	MANE Select	c.58-4251C>T		intron	N/A	NP_000195.3
	CFI	NM_001375278.1		c.58-4251C>T		intron	N/A	NP_001362207.1
	CFI	NM_001440985.1		c.58-4251C>T		intron	N/A	NP_001427914.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CFI	ENST00000394634.7	TSL:1 MANE Select	c.58-4251C>T		intron	N/A	ENSP00000378130.2
	ENSG00000285330	ENST00000645635.1		c.58-4251C>T		intron	N/A	ENSP00000493607.1
	CFI	ENST00000394635.8	TSL:2	c.58-4251C>T		intron	N/A	ENSP00000378131.3

Frequencies

GnomAD3 genomes AF: 0.241 AC: 36578 AN: 151760 Hom.: 5032 Cov.: 30

Gnomad AFR AF: 0.114

Gnomad AMI AF: 0.357

Gnomad AMR AF: 0.354

Gnomad ASJ AF: 0.289

Gnomad EAS AF: 0.255

Gnomad SAS AF: 0.236

Gnomad FIN AF: 0.313

Gnomad MID AF: 0.351

Gnomad NFE AF: 0.276

Gnomad OTH AF: 0.274

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.241 AC: 36584 AN: 151878 Hom.: 5035 Cov.: 30 AF XY: 0.244 AC XY: 18101 AN XY: 74188

African (AFR) AF: 0.114 AC: 4714 AN: 41466

American (AMR) AF: 0.355 AC: 5410 AN: 15248

Ashkenazi Jewish (ASJ) AF: 0.289 AC: 1002 AN: 3466

East Asian (EAS) AF: 0.255 AC: 1315 AN: 5152

South Asian (SAS) AF: 0.236 AC: 1134 AN: 4804

European-Finnish (FIN) AF: 0.313 AC: 3298 AN: 10540

Middle Eastern (MID) AF: 0.344 AC: 101 AN: 294

European-Non Finnish (NFE) AF: 0.276 AC: 18708 AN: 67890

Other (OTH) AF: 0.274 AC: 577 AN: 2108

Alfa AF: 0.267 Hom.: 796

Bravo AF: 0.242

Asia WGS AF: 0.268 AC: 933 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.74
CADD	Benign	13
DANN	Benign	0.79
PhyloP100		0.36
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs12512308; hg19: chr4-110692231;